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LT1302-5

更新时间： 2024-01-08 17:01:09
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
16页 360K
描述
Micropower High Output Current Step-Up Adjustable and Fixed 5V DC/DC Converters

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中文翻译

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LT1302-5 数据手册

 浏览型号LT1302-5的Datasheet PDF文件第2页浏览型号LT1302-5的Datasheet PDF文件第3页浏览型号LT1302-5的Datasheet PDF文件第4页浏览型号LT1302-5的Datasheet PDF文件第5页浏览型号LT1302-5的Datasheet PDF文件第6页浏览型号LT1302-5的Datasheet PDF文件第7页 
LT1302/LT1302-5  
Micropower  
High Output Current  
Step-Up Adjustable and  
Fixed 5V DC/DC Converters  
U
DESCRIPTIO  
EATURE  
S
F
The LT®1302/LT1302-5 are micropower step-up DC/DC  
converters that maintain high efficiency over a wide  
range of output current. They operate from a supply  
voltage as low as 2V and feature automatic shifting  
between Burst Mode operation at light load, and current  
mode operation at heavy load.  
■
■
■
■
■
■
5V at 600mA or 12V at 120mA from 2-Cell Supply  
200µA Quiescent Current  
Logic Controlled Shutdown to 15µA  
Low VCESAT Switch: 310mV at 2A Typical  
Burst ModeTM Operation at Light Load  
Current Mode Operation for Excellent  
Line and Load Transient Response  
Available in 8-Lead SO or PDIP  
The internal low loss NPN power switch can handle  
current in excess of 2A and switch at frequencies up to  
400kHz. Quiescent current is just 200µA and can be  
further reduced to 15µA in shutdown.  
■
■
Operates with Supply Voltage as Low as 2V  
O U  
PPLICATI  
S
A
Availablein8-pinPDIPor8-pinSOpackaging,theLT1302/  
LT1302-5 have the highest switch current rating of any  
similarly packaged switching regulators presently on the  
market.  
■
■
■
■
■
Notebook and Palmtop Computers  
Portable Instruments  
Personal Digital Assistants  
Cellular Telephones  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
Flash Memory  
U
O
TYPICAL APPLICATI  
2-Cell to 5V Converter Efficiency  
NC  
5
L1  
6
90  
10µH  
V
I
T
IN  
3
4
7
88  
86  
84  
SW  
SHDN  
LT1302-5  
SHUTDOWN  
C3  
0.1µF  
V
= 3V  
IN  
8
+
C1  
100µF  
PGND  
GND  
1
SENSE  
V
C
2 CELLS  
D1  
V
= 2.5V  
IN  
82  
80  
2
V
= 2V  
IN  
R
C
20k  
C
0.01µF  
+
78  
76  
74  
72  
70  
C2  
C
100µF  
OUTPUT  
5V  
LT1302 • F01  
600mA  
1
10  
100  
1000  
C1 = C2 = SANYO OS-CON  
L1 = COILTRONICS CTX10-3  
COILCRAFT DO3316-103  
D1 = MOTOROLA MBRS130LT3  
LOAD CURRENT (mA)  
LT1302 • TA02  
Figure 1. 2-Cell to 5V/600mA DC/DC Converter  
1
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